Cast-steel-spoked wheel



WILLIAM EASTUS WILLIAMS, OF CHICAGO, ILLINIS.

CASTLSTEELSEOKED WHEEL.

wensen.

Speccation of Letters Patent.

Patented Aug. 16:, 1921.

Application filed Septemberl, 1919. Serial No. 324,497.

To all whom 'it may concern:

Be it known that l, XVILLIAM Emerce Winnaars, a citizen of the United States, and a. resident of Chicago, county of Cook, and State of illinois, have'invented a new vand' useful Improvement inv Gast-Steel Spolred 1Wheels, of which the following is a specification. y

The object of my invention is to provide a light, very strong, spoked cast steel wheel vand one that will have the fewest flaws4 from defective castings, owing to shrinkage strains and cracks and one that will have a certain degree, of/'elasticity or resilience as a finished wheel.

The invention is set forth in theclaims Reference will be had to the vaccompanying drawing, in which Figure-1 is a front elevation of the wheel.

Eig. 2 is a transverse sectional elevation.

Fig. 3 is a detail ot' a forni of the rim, slightly modified from Fig. 2.

Eig. 4 a plan of a section of the rim shown in Figs. l and 2.

5. and 6 show a detailed alternate construction 0i' a feature of the spokes.

lin the drawing l indicates the ordinary hub of a cast steel wheel from which extend integral spokes of cruciforrn' cross section. These spokes 2 integrally unite with the crown portion of hat arch members 3 which are cast integral with tbe rim.

At the crown oi' each arch and at a corresponding'point on the lriin are provided alining cast spoke extensions, 5, 7, primarily separated by a. narrow gap at 6. The main portion or body of the cast riin has cored spaces S across which extend approximately radial webs 9, shown in dotted lines in Fig. 4, and the outer circumferential 'face of this hollow rini is encircled by a` co1ninon steel ring-or band 'forming a tire base l1 which may receive a resilient tire 12, when such tire is nsed.

The tread 10 in Fig'. 2, has a wide eX- tendine iange 13, through which staples.

14 are iiastened to )revent the tire from com ing off.' W'hen w at are known as pressed on tires are 1ased, the wide flange 13 or' the rirnai is eliminated and the riin then appears as is shown in Fig. 3.

When the wheel is cast the spaces 6, between the projections 5 and 'Y on the spokes are cast open and then after the wheel. has

been annealed these spaces are welded in by various systems of welding well known.-

In place of weldingin these sections I may simply connect theni against thrusts or strut loads by drilling a hole across through the gap 6, as isindicated by Figs. 5 and 6, and then filling this drilled hole with a rivet as indicated by 15.

A cast steel wheel is a difiicult casting to make, owing 'to the variation in shrinkage and also to the excessive shrinkageas relates to spokes and the rim itself.

'By my fiat arch menibe'rs the` connections of the spokes :2 with the rind are so successfully made that any variation in the contraction between the rim and the spokes themselves will be accommodated by the arch members Sspringing either Way and the gap 6 between the parts 5 and 7\ permits this spring, and then when this gap 6 is iilled in by welding a strong construction is obtained.

lN hat ll claim is l. The method of forming a metal wheel which consists in 'integrally connecting the hub with the riin by spokes primarily divided and having the separated parts after.-

ward united by rigid. conneetionsl 2. rEhe method of forming a` metal wheelwhich consists in connecting the lrub tothe rim by means otshort spokes having at their outer ends arches extending to the rim vand later rigidly bridgingthe space 'between the crown of each arch and the rim. f

3. In a cast steel spolr'ed wheel, a series of spokes extending' from the hub in a plane and merged into the `crown of arched meinbers connected to the rim; with a continuation of the radial spolred members extending through and also connected to the rim.

li. ln a cast wheel spokes extending from the hub and merged into arch shaped meinbers connected to the rim with a projection extending-on a radial line with the spokes between the arch and the rim, and this projection ,cast open and then filled in after the castinsnlr is-inade. i

5. ln a wheel of the class "described", spokes extending from the hub and merged into arch shaped members connected to the rim; with a radial extension extpnding .from the spokeends across the arch to the rim. and this extension cast open and filled in by welding after the casting is made.

msi; @Thad having n boxlike rim, "mu pen between kim'a cylud'i l :m11 uemnlly divided by nns; 'f :i hub with Spokes each anng m il (me of the Webspand a le carlmm andrai' rf the 'anges und webs Signed at Chicago, in the county of Cook and Siate of lnos, this fifteenth day of September, 1919.

WELLM ERASTUS WELAMS.

` Vtnesse J B, J. BERNHARD, J. B. JEFFERSON., 

